timeshift: try to create the TS directory always before use
timeshift: try to create the TS directory always before use

The vlc_stat() call did not really ensure that the directory was usable
(space and permission), nor that it would still exist when needed.

Now instead, try to create the temporary file and fall back to the
default path if that fails.

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc